Pith Number

pith:JR55OAJK

pith:2020:JR55OAJKMUEDY3A2RO5JMP3R24

not attested not anchored not stored refs pending

Naked singularities in quadratic f(R) gravity

Christian F. Steinwachs, Enrique Hernand\'ez-Lorenzo

arxiv:2003.12109 v2 · 2020-03-26 · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JR55OAJKMUEDY3A2RO5JMP3R24}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Universality in static spherically symmetric solutions of f(R) gravity

Receipt and verification

First computed	2026-07-05T01:14:44.143705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c7bd7012a65083c6c1a8bba963f71d712cb457474ec84406b9cfed99b0d1737

Aliases

arxiv: 2003.12109 · arxiv_version: 2003.12109v2 · doi: 10.48550/arxiv.2003.12109 · pith_short_12: JR55OAJKMUED · pith_short_16: JR55OAJKMUEDY3A2 · pith_short_8: JR55OAJK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JR55OAJKMUEDY3A2RO5JMP3R24 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4c7bd7012a65083c6c1a8bba963f71d712cb457474ec84406b9cfed99b0d1737

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13cf0cc4c0bcd14da045f83833070ec1a6d4ec84dada280bd1d444968d7017f5",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-03-26T19:00:01Z",
    "title_canon_sha256": "7fa333cdac761122a129cf5a3a6aad1505fbe25340aa9d839e2ab2579d5261b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12109",
    "kind": "arxiv",
    "version": 2
  }
}